On Fri, Feb 5, 2021 at 9:55 AM Alan Grayson <[email protected]> wrote:
Assuming General Relativity is correct the formula PE= -(G*M^2)/R is valid >> for* ANY* mass, even a photon of light because a photon contains energy >> and M=E/C^2, and a photon of light is about as far from being "fixed" as >> you can get. >> > > *You misunderstand. For a particular mass M, the formula works. But in > your model M increases for an expanding vacuum sphere. Do you mean to sum > over the individual masses, to get the total PE?* > Obviously > *> Anyway, without more information, I don't see how you can calculate the > KE* > If the formula that I gave for gravitational potential energy is not valid then hydroelectric dams generate their energy from nothing and the conservation of energy would not only be violated on the cosmic scale but would be violated on the local scale as well and thus be absolutely useless. *> As far as I can tell, you just keep asserting that the rest mass* > Why do you keep talking about "rest mass"? A photon of light has no rest mass at all yet it produces a gravitational field and that's the only thing it's important if you're talking about the potential energy that gravitational field can produce. > * > increases as the vacuum sphere increases, but I haven't seen anything > other than an assertion.* > If General Relativity is correct and if the vacuum contains residual energy (as general relativity allows an observation seems to insist) and if the volume of a sphere really is 4/3 PI*R^3 as has been known for centuries then the mass of the sphere of vacuum MUST increase as the radius R gets larger because M=E/C^2. John K Clark See what's on my new list at Extropolis <https://groups.google.com/g/extropolis> -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAJPayv18xZi5t9W0rUR%3D2aWxOLDBXSMZtU_Mef013%3DpZj-a0EA%40mail.gmail.com.
